CET Time, Speed and Distance Questions with Solutions – Page 6

A and B take part in 100m race. A runs at 5 kmph. A gives B a start of 8 m and still beats him by 8 seconds. The speed of B is:

A road from A to B is 11.5 km long: first goes uphill, then crosses a plain, and then goes downhill. A person walking from A to B covered this road in 2 h 54 min, and the return journey took him 3 h 6 min. His speed uphill is 3 km/h, on the plain 4 km/h and downhill is 5 km/h. What is the length of the plain part of the journey?

In a 100 m race, A beats B by 10m and C by 13m. In a race of 180 m , B will beat C by

A ship 156 km from the shore springs a leak which admits 2 1/3 metric tons of water in 6 1/2 minutes. A quantity of 68 metric tons would suffice to sink it, but the pumps can throw out 15 metric tons in an hour. The average rate of sailing so that it just reaches the shore as it begins to sink should be